Like the MacBook Air or HTC Legend, architect Didier Fiuza Fuastino's chair is made from a single sheet of aluminum—but unlike those gadgets, this "Hermaphrodite" chair is designed with the genitals in mind. Warning: NSFW picture below!

Supposedly the stool is modeled after the pelvis, and is designed to be straddled, as this well-proportioned laydee shows: